Loosened some dependencies, specified compatible engines

src/node/package.json

@@ -24,20 +24,23 @@
     "test": "node ./node_modules/mocha/bin/mocha && npm run-script lint"
   },
   "dependencies": {
-    "bindings": "^1.2.1",
-    "jshint": "^2.5.5",
-    "nan": "~1.3.0",
+    "bindings": "^1.2.0",
+    "nan": "^1.5.0",
     "protobufjs": "murgatroid99/ProtoBuf.js",
-    "underscore": "^1.7.0",
+    "underscore": "^1.6.0",
     "underscore.string": "^3.0.0"
   },
   "devDependencies": {
     "async": "^0.9.0",
     "google-auth-library": "^0.9.2",
+    "jshint": "^2.5.0",
     "minimist": "^1.1.0",
     "mocha": "~1.21.0",
     "strftime": "^0.8.2"
   },
+  "engines": {
+    "node": ">=0.10.13 <0.11"
+  },
   "files": [
     "LICENSE",
     "README.md",